SURFACE

 

Commands in this menu are used to create and modify CAD surface data in DSI.   DSI imports surface data and line data and converts it into DSI format. The CAD Import function in the FILE Menu is used to import externally created CAD data.

 

 

A detailed description of each function is given in the following sections.

 

The following are working definitions used throughout this section of DSI:

 

  Domain: ­The trimmed surface of the common region of the interior of the outer boundary and the exterior of the inner boundaries as well as the boundary curves.

  Outer Boundary:  One boundary that is situated within the domain (the surface that is to be trimmed).  In particular, it describes the boundary curve of the domain.

  Inner Boundary:  Any number of inner boundaries including zero.  The set of inner boundaries satisfies two criteria:

 

(a) The curves as well as their interiors are mutually disjointed.

(b) Each curve lies in the interior of the outer boundary.